Whistle



i UNITED STATES -imrlvr olffrlct.l

EDWARD J. SCHNEIDER, 0E s'r. Louis, MISSOURI.

WHISTLE.

To all whom it may concern.'

Be it known that I, EDWARD' J. SCHNEIDER, a citizen of the United States, residing at the city of St. Louis, Missouri, have invented a newand useful Whistle, of which the following is a specification.

This invention relates to whistles, of the type used for signaling purposes in connection with vehicles and engines.

An object of the invention is to provide a whistle of an improved and etlicient con struction that may be economically manufactured, which is composed of a minimum number of parts united in a novel and eflicient n ianner.

The. drawing is a sectional view of my improved whistle.

In the embodiment shown in thevdrawing, the whistle includes a stem having a threaded portion 1 for connection with the part to which the whistle is to be attached. The stem is formed witha circumferential lshoulder or flange 2, serving as a support for a bowl or chamber. A passage 4 is formed within a stem extending from the lower end of the stem to a joint within the bowl 3 and ports 5 opening from the upper 'end of the passage 4 into the bowl 3.

The dome 6 of the Whistle is-of proper An upper wall is provided for the bovvlA or chamber 3, comprising wall memberS, having a beveled edge pressing against the flange throughout `the* circumference of said wall member 8, and forming, practically, an' air-tightjoint. The stem extends through the wall memberS and yhas threads ,on its'upper end receiving thenut 9, which is screwed to position to clamp the 'parts together, as shown.

The inner side of the wall the dome G is cut out or removed to form the openv The flange stem 12 in connection With the valve 11,V extends axially through thepassage 4,. and through the upper portion of the stem containing said passage, into the dome l6. The protruding end of the stem Specification of Letters'latent. Patent-,Qd Juin@ 28, 1921 v lApplication filed March 18,1921; Serial No. 453,431. i

12 is encircled by a spring 13 of the eXpansion type, having its lower end vbearing against the end of the stem in which the valve stem is mounted, and its upper end bearing against an abutment 14 in connection with the valve stem 12. Arranged in this manner, this spring 13 is operated to hold the valve 11 in closed position and will Vyield under pressure to permit the valve 11 to bemoved to open position.

For moving the valve to open position, in opposition to the power of the spring 13, I provide a lever 15, pivoted to a support 16, and having its inner end adjacent to Vthe upper end of the valve stem 12, so that by proper manipulation of the lever, the valve may be opened. After the lever 15 is released, the valve will be closed automati-v cally by the spring 13.

. The air or steam jet opening 17 is formed` through the wall member 8, adj acentrto the opening 1() through the donie 6, so that` when the air or steam is forced through said comprising, a supporting stem, an abutment on said stem, a chamber on said stem bear- Y ing against said abutment, a dome having its edge within said chamber, a wall member clamping the edge of said dome against the wall of the chamber, a valve supported in said stem, a spring for holding the valve closed anda lever for opening the valve in opposition to said spring.

2. A whistle of the character describedy comprising, a supporting'stem, an abutment against said abutment, aV dome having its edge within said chamber, a wall. member wall of the chamber, an element on said stem holding said wall member in position, a pas# sage through said stem opening into said on saidV stem, a chamber on said stem bearingV pressing the edge of fthe domev against the w chamber, afpassage through said Wall mem- Y berv into the dome, a valve supported by said stem for closing the passage in said stem, a spring holding said' valve closed, and a lever supported by said wall member for opening said valve in opposition to said stem.

` '3. A Whistle. of the character described comprising, a supporting stem', a flange on said stem, a chamber onsaid stemV supported by said flange, and having vthe upper portion ofthe wall thereof flaring outwardly,

a dome having an opening through t-he inner side thereof, an oblique flange on said dome,

extending into the flaring portion of said f chamber, 'a Wall member pressing said dome flange against the flaring portion of said chamber, :in element on said stem holding said Wall member in clampingA position, a, passage through said stem into said ohnmber, a Valve supported by said stem for opening' and Closing 4said paage, :i` vspring holding said l-vzilve closed, a lever Supported by 'said *Walll member *foropening said Valve,-

EDWAED Jj SCHNEIDER. 

